| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a large area is required for settlement when an antenna of a radio tag reader is oriented in all directions of a commodity container. SOLUTION: The commodity settlement system processes settlement for a commodity having the radio tag by transmitting commodity data stored in the radio tag. The radio tag including a capacitor, a rectifier circuit, a memory, and an antenna, is configured to charge the capacitor with a direct current converted by the rectifier circuit from a current induced in the antenna by receiving a radio wave from an external device, and stores temporary settlement information in the memory. The commodity settlement system includes a first radio tag reader/writer connected to an antenna provided on the commodity shelf, for setting the temporary settlement information in the memory to an unsettled state through the antenna at intervals of a predetermined time. COPYRIGHT: (C)2011,JPO&INPIT
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